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e43c066c 1#ifndef ALIITSTRACKERMI_H
2#define ALIITSTRACKERMI_H
572f41f9 3/* Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
e43c066c 4 * See cxx source for full Copyright notice */
5
572f41f9 6/* $Id$ */
bf6adc12 7
e43c066c 8//-------------------------------------------------------------------------
9// ITS tracker
15dd636f 10// reads AliITSclusterMI clusters and creates AliITStrackMI tracks
11// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
23197852 12// Current support and development:
13// Andrea Dainese, andrea.dainese@lnl.infn.it
e43c066c 14//-------------------------------------------------------------------------
15
bf6adc12 16class TTree;
17class TTreeSRedirector;
af885e0f 18class AliESDEvent;
67c1e979 19
00a7cc50 20#include <TObjArray.h>
21#include "AliITSRecPoint.h"
bf6adc12 22#include "AliITStrackMI.h"
4a66240a 23#include "AliITSPlaneEff.h"
23197852 24#include "AliITSChannelStatus.h"
25#include "AliITSDetTypeRec.h"
7167ae53 26#include "AliPlaneEff.h"
ae00569a 27#include "AliTracker.h"
e43c066c 28
29//-------------------------------------------------------------------------
30class AliITStrackerMI : public AliTracker {
31public:
8221b41b 32 AliITStrackerMI();
1f3e997f 33 AliITStrackerMI(const Char_t *geom);
8221b41b 34 virtual ~AliITStrackerMI();
e43c066c 35 AliCluster *GetCluster(Int_t index) const;
df29e9a4 36 virtual Bool_t GetTrackPoint(Int_t index, AliTrackPoint& p) const;
9a5326b1 37 virtual Bool_t GetTrackPointTrackingError(Int_t index,
38 AliTrackPoint& p, const AliESDtrack *t);
00a7cc50 39 AliITSRecPoint *GetClusterLayer(Int_t layn, Int_t ncl) const
e43c066c 40 {return fgLayers[layn].GetCluster(ncl);}
41 Int_t GetNumberOfClustersLayer(Int_t layn) const
42 {return fgLayers[layn].GetNumberOfClusters();}
43 Int_t LoadClusters(TTree *cf);
44 void UnloadClusters();
23197852 45 void FillClusterArray(TObjArray* array) const;
af885e0f 46 Int_t Clusters2Tracks(AliESDEvent *event);
47 Int_t PropagateBack(AliESDEvent *event);
48 Int_t RefitInward(AliESDEvent *event);
ae00569a 49 Bool_t RefitAt(Double_t x, AliITStrackMI *track,
7167ae53 50 const AliITStrackMI *clusters, Bool_t extra=kFALSE, Bool_t planeeff=kFALSE);
ae00569a 51 Bool_t RefitAt(Double_t x, AliITStrackMI *track,
7167ae53 52 const Int_t *clusters, Bool_t extra=kFALSE, Bool_t planeeff=kFALSE);
e43c066c 53 void SetupFirstPass(Int_t *flags, Double_t *cuts=0);
54 void SetupSecondPass(Int_t *flags, Double_t *cuts=0);
55
56 void SetLastLayerToTrackTo(Int_t l=0) {fLastLayerToTrackTo=l;}
57 void SetLayersNotToSkip(Int_t *l);
58 void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
628e7bb0 59
60 void GetDCASigma(AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz);
00a7cc50 61 Double_t GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer);
62 Int_t UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t layer) const;
7167ae53 63 AliPlaneEff *GetPlaneEff() {return (AliPlaneEff*)fPlaneEff;} // return the pointer to AliPlaneEff
23197852 64 void SetDetTypeRec(AliITSDetTypeRec *detTypeRec) {fDetTypeRec = detTypeRec; ReadBadFromDetTypeRec(); }
65
e43c066c 66 class AliITSdetector {
67 public:
23197852 68 AliITSdetector():fR(0),fPhi(0),fSinPhi(0),fCosPhi(0),fYmin(0),fYmax(0),fZmin(0),fZmax(0),fIsBad(kFALSE),fNChips(0),fChipIsBad(0) {}
69 AliITSdetector(Double_t r,Double_t phi):fR(r),fPhi(phi),fSinPhi(TMath::Sin(phi)),fCosPhi(TMath::Cos(phi)),fYmin(10000),fYmax(-1000),fZmin(10000),fZmax(-1000),fIsBad(kFALSE),fNChips(0),fChipIsBad(0) {}
70 ~AliITSdetector() {if(fChipIsBad) delete [] fChipIsBad;}
00a7cc50 71 inline void GetGlobalXYZ( const AliITSRecPoint *cl, Double_t xyz[3]) const;
e43c066c 72 Double_t GetR() const {return fR;}
73 Double_t GetPhi() const {return fPhi;}
74 Double_t GetYmin() const {return fYmin;}
75 Double_t GetYmax() const {return fYmax;}
76 Double_t GetZmin() const {return fZmin;}
77 Double_t GetZmax() const {return fZmax;}
23197852 78 Bool_t IsBad() const {return fIsBad;}
79 Int_t GetNChips() const {return fNChips;}
80 Bool_t IsChipBad(Int_t iChip) const {return (fChipIsBad ? fChipIsBad[iChip] : kFALSE);}
e43c066c 81 void SetYmin(Double_t min) {fYmin = min;}
82 void SetYmax(Double_t max) {fYmax = max;}
83 void SetZmin(Double_t min) {fZmin = min;}
84 void SetZmax(Double_t max) {fZmax = max;}
23197852 85 void SetBad() {fIsBad = kTRUE;}
86 void ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,AliITSDetTypeRec *detTypeRec);
e43c066c 87 private:
23197852 88 AliITSdetector(const AliITSdetector& det);
89 AliITSdetector & operator=(const AliITSdetector& det){
90 this->~AliITSdetector();new(this) AliITSdetector(det);
91 return *this;}
e43c066c 92 Double_t fR; // polar coordinates
93 Double_t fPhi; // of this detector
94 Double_t fSinPhi; // sin of phi;
95 Double_t fCosPhi; // cos of phi
96 Double_t fYmin; // local y minimal
97 Double_t fYmax; // local max y
98 Double_t fZmin; // local z min
99 Double_t fZmax; // local z max
23197852 100 Bool_t fIsBad; // is detector dead or noisy?
101 Int_t fNChips; // number of chips
102 Bool_t *fChipIsBad; //[fNChips] is chip dead or noisy?
e43c066c 103 };
104
105 class AliITSlayer {
e43c066c 106 public:
107 AliITSlayer();
108 AliITSlayer(Double_t r, Double_t p, Double_t z, Int_t nl, Int_t nd);
23197852 109 ~AliITSlayer();
00a7cc50 110 Int_t InsertCluster(AliITSRecPoint *c);
e43c066c 111 void SortClusters();
112 void ResetClusters();
113 void ResetWeights();
6518a6c5 114 void SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin,Double_t ymax);
ae00569a 115 const AliITSRecPoint *GetNextCluster(Int_t &ci,Bool_t test=kFALSE);
e43c066c 116 void ResetRoad();
117 Double_t GetRoad() const {return fRoad;}
118 Double_t GetR() const {return fR;}
119 Int_t FindClusterIndex(Float_t z) const;
00a7cc50 120 AliITSRecPoint *GetCluster(Int_t i) const {return i<fN? fClusters[i]:0;}
8602c008 121 Float_t *GetWeight(Int_t i) {return i<fN ?&fClusterWeight[i]:0;}
e43c066c 122 AliITSdetector &GetDetector(Int_t n) const { return fDetectors[n]; }
123 Int_t FindDetectorIndex(Double_t phi, Double_t z) const;
124 Double_t GetThickness(Double_t y, Double_t z, Double_t &x0) const;
125 Int_t InRoad() const ;
126 Int_t GetNumberOfClusters() const {return fN;}
127 Int_t GetNladders() const {return fNladders;}
128 Int_t GetNdetectors() const {return fNdetectors;}
129 Int_t GetSkip() const {return fSkip;}
130 void SetSkip(Int_t skip){fSkip=skip;}
131 void IncAccepted(){fAccepted++;}
81e97e0d 132 Int_t GetAccepted() const {return fAccepted;}
b9671574 133 Int_t GetClusterTracks(Int_t i, Int_t j) const {return fClusterTracks[i][j];}
134 void SetClusterTracks(Int_t i, Int_t j, Int_t c) {fClusterTracks[i][j]=c;}
e43c066c 135 protected:
8221b41b 136 AliITSlayer(const AliITSlayer& layer);
137 AliITSlayer & operator=(const AliITSlayer& layer){
138 this->~AliITSlayer();new(this) AliITSlayer(layer);
139 return *this;}
e43c066c 140 Double_t fR; // mean radius of this layer
141 Double_t fPhiOffset; // offset of the first detector in Phi
142 Int_t fNladders; // number of ladders
143 Double_t fZOffset; // offset of the first detector in Z
144 Int_t fNdetectors; // detectors/ladder
145 AliITSdetector *fDetectors; // array of detectors
146 Int_t fN; // number of clusters
e50912db 147 AliITSRecPoint *fClusters[AliITSRecoParam::fgkMaxClusterPerLayer]; // pointers to clusters
148 Int_t fClusterIndex[AliITSRecoParam::fgkMaxClusterPerLayer]; // pointers to clusters
149 Float_t fY[AliITSRecoParam::fgkMaxClusterPerLayer]; // y position of the clusters
150 Float_t fZ[AliITSRecoParam::fgkMaxClusterPerLayer]; // z position of the clusters
e43c066c 151 Float_t fYB[2]; // ymin and ymax
152 //
e50912db 153 AliITSRecPoint *fClusters5[6][AliITSRecoParam::fgkMaxClusterPerLayer5]; // pointers to clusters - slice in y
154 Int_t fClusterIndex5[6][AliITSRecoParam::fgkMaxClusterPerLayer5]; // pointers to clusters - slice in y
155 Float_t fY5[6][AliITSRecoParam::fgkMaxClusterPerLayer5]; // y position of the clusters slice in y
156 Float_t fZ5[6][AliITSRecoParam::fgkMaxClusterPerLayer5]; // z position of the clusters slice in y
e43c066c 157 Int_t fN5[6]; // number of cluster in slice
158 Float_t fDy5; //delta y
159 Float_t fBy5[6][2]; //slice borders
160 //
e50912db 161 AliITSRecPoint *fClusters10[11][AliITSRecoParam::fgkMaxClusterPerLayer10]; // pointers to clusters - slice in y
162 Int_t fClusterIndex10[11][AliITSRecoParam::fgkMaxClusterPerLayer10]; // pointers to clusters - slice in y
163 Float_t fY10[11][AliITSRecoParam::fgkMaxClusterPerLayer10]; // y position of the clusters slice in y
164 Float_t fZ10[11][AliITSRecoParam::fgkMaxClusterPerLayer10]; // z position of the clusters slice in y
e43c066c 165 Int_t fN10[11]; // number of cluster in slice
f43e383b 166 Float_t fDy10; // delta y
167 Float_t fBy10[11][2]; // slice borders
e43c066c 168 //
e50912db 169 AliITSRecPoint *fClusters20[21][AliITSRecoParam::fgkMaxClusterPerLayer20]; // pointers to clusters - slice in y
170 Int_t fClusterIndex20[21][AliITSRecoParam::fgkMaxClusterPerLayer20]; // pointers to clusters - slice in y
171 Float_t fY20[21][AliITSRecoParam::fgkMaxClusterPerLayer20]; // y position of the clusters slice in y
172 Float_t fZ20[21][AliITSRecoParam::fgkMaxClusterPerLayer20]; // z position of the clusters slice in y
e43c066c 173 Int_t fN20[21]; // number of cluster in slice
f43e383b 174 Float_t fDy20; //delta y
175 Float_t fBy20[21][2]; //slice borders
e43c066c 176 //
00a7cc50 177 AliITSRecPoint** fClustersCs; //clusters table in current slice
e43c066c 178 Int_t *fClusterIndexCs; //cluster index in current slice
179 Float_t *fYcs; //y position in current slice
180 Float_t *fZcs; //z position in current slice
181 Int_t fNcs; //number of clusters in current slice
182 Int_t fCurrentSlice; //current slice
183 //
e50912db 184 Float_t fClusterWeight[AliITSRecoParam::fgkMaxClusterPerLayer]; // probabilistic weight of the cluster
185 Int_t fClusterTracks[4][AliITSRecoParam::fgkMaxClusterPerLayer]; //tracks registered to given cluster
e43c066c 186 Float_t fZmax; // edges
187 Float_t fYmin; // of the
188 Float_t fYmax; // "window"
189 Int_t fI; // index of the current cluster within the "window"
190 Int_t fImax; // index of the last cluster within the "window"
191 Int_t fSkip; // indicates possibility to skip cluster
f43e383b 192 Int_t fAccepted; // accept indicator
e43c066c 193 Double_t fRoad; // road defined by the cluster density
194 };
195 AliITStrackerMI::AliITSlayer & GetLayer(Int_t layer) const;
196 AliITStrackerMI::AliITSdetector & GetDetector(Int_t layer, Int_t n) const {return GetLayer(layer).GetDetector(n); }
197
198protected:
81e97e0d 199 Int_t GetNearestLayer(const Double_t *xr) const; //get nearest upper layer close to the point xr
af885e0f 200 void FindV02(AliESDEvent *event); //try to find V0
201 void RefitV02(AliESDEvent *event); //try to refit V0's
202 void UpdateTPCV0(AliESDEvent *event); //try to update, or reject TPC V0s
e43c066c 203 void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
15dd636f 204 void CookLabel(AliITStrackMI *t,Float_t wrong) const;
e50912db 205 Double_t GetEffectiveThickness();
81e97e0d 206 void FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain);
e43c066c 207 void ResetBestTrack() {
15dd636f 208 fBestTrack.~AliITStrackMI();
209 new(&fBestTrack) AliITStrackMI(fTrackToFollow);
e43c066c 210 }
15dd636f 211 void ResetTrackToFollow(const AliITStrackMI &t) {
212 fTrackToFollow.~AliITStrackMI();
213 new(&fTrackToFollow) AliITStrackMI(t);
e43c066c 214 }
15dd636f 215 void CookdEdx(AliITStrackMI* track);
216 Double_t GetNormalizedChi2(AliITStrackMI * track, Int_t mode);
217 Double_t GetTruncatedChi2(AliITStrackMI * track, Float_t fac);
218 Double_t NormalizedChi2(AliITStrackMI * track, Int_t layer);
219 Double_t GetInterpolatedChi2(AliITStrackMI * forwardtrack, AliITStrackMI * backtrack);
220 Double_t GetMatchingChi2(AliITStrackMI * track1, AliITStrackMI * track2);
6518a6c5 221 Double_t GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr);
e43c066c 222
223 Float_t *GetWeight(Int_t index);
15dd636f 224 void AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex);
e43c066c 225 void SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode);
15dd636f 226 AliITStrackMI * GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax);
e43c066c 227 void GetBestHypothesysMIP(TObjArray &itsTracks);
15dd636f 228 void RegisterClusterTracks(AliITStrackMI* track, Int_t id);
229 void UnRegisterClusterTracks(AliITStrackMI* track, Int_t id);
00a7cc50 230 Float_t GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6]);
15dd636f 231 Int_t GetOverlapTrack(AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6], Int_t overlist[6]);
232 AliITStrackMI * GetBest2Tracks(Int_t trackID1, Int_t treackID2, Float_t th0, Float_t th1);
afd25725 233 Float_t * GetErrY(Int_t trackindex) const {return &fCoefficients[trackindex*48];}
234 Float_t * GetErrZ(Int_t trackindex) const {return &fCoefficients[trackindex*48+12];}
235 Float_t * GetNy(Int_t trackindex) const {return &fCoefficients[trackindex*48+24];}
236 Float_t * GetNz(Int_t trackindex) const {return &fCoefficients[trackindex*48+36];}
e43c066c 237 void SignDeltas( TObjArray *ClusterArray, Float_t zv);
afd25725 238 void MakeCoefficients(Int_t ntracks);
e50912db 239 void BuildMaterialLUT(TString material);
240 void MakeTrksMaterialLUT(Int_t ntracks);
241 void DeleteTrksMaterialLUT();
242 Int_t CorrectForPipeMaterial(AliITStrackMI *t, TString direction="inward");
243 Int_t CorrectForShieldMaterial(AliITStrackMI *t, TString shield, TString direction="inward");
244 Int_t CorrectForLayerMaterial(AliITStrackMI *t, Int_t layerindex, Double_t oldGlobXYZ[3], TString direction="inward");
15dd636f 245 void UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const;
23197852 246 void ReadBadFromDetTypeRec();
6518a6c5 247 Int_t CheckSkipLayer(AliITStrackMI *track,Int_t ilayer,Int_t idet) const;
23197852 248 Int_t CheckDeadZone(AliITStrackMI *track,Int_t ilayer,Int_t idet,Double_t zmin,Double_t zmax,Double_t ymin,Double_t ymax,Bool_t noClusters=kFALSE) const;
ae00569a 249 Bool_t LocalModuleCoord(Int_t ilayer,Int_t idet,AliITStrackMI *track,
250 Float_t &xloc,Float_t &zloc) const;
7167ae53 251// method to be used for Plane Efficiency evaluation
252 Bool_t IsOKForPlaneEff(AliITStrackMI* track, Int_t ilayer) const; // Check if a track is usable
253 // for Plane Eff evaluation
254 void UseTrackForPlaneEff(AliITStrackMI* track, Int_t ilayer); // Use this track for Plane Eff
255//
e43c066c 256 Int_t fI; // index of the current layer
e50912db 257 static AliITSlayer fgLayers[AliITSgeomTGeo::kNLayers];// ITS layers
258 AliITStrackMI fTracks[AliITSgeomTGeo::kNLayers]; // track estimations at the ITS layers
15dd636f 259 AliITStrackMI fBestTrack; // "best" track
260 AliITStrackMI fTrackToFollow; // followed track
e43c066c 261 TObjArray fTrackHypothesys; // ! array with track hypothesys- ARRAY is the owner of tracks- MI
81e97e0d 262 TObjArray fBestHypothesys; // ! array with track hypothesys- ARRAY is the owner of tracks- MI
628e7bb0 263 TObjArray fOriginal; // ! array with seeds from the TPC
e43c066c 264 Int_t fBestTrackIndex[100000]; // ! index of the best track
265 Int_t fCurrentEsdTrack; // ! current esd track - MI
266 Int_t fPass; // current pass through the data
267 Int_t fConstraint[2]; // constraint flags
628e7bb0 268 Bool_t fAfterV0; //indicates V0 founded
e50912db 269 Int_t fLayersNotToSkip[AliITSgeomTGeo::kNLayers]; // layer masks
e43c066c 270 Int_t fLastLayerToTrackTo; // the innermost layer to track to
e50912db 271 Float_t * fCoefficients; //! working array with errors and mean cluster shape
afd25725 272 AliESDEvent * fEsd; //! pointer to the ESD event
273 Double_t fSPDdetzcentre[4]; // centres of SPD modules in z
e50912db 274 TString fTrackingPhase; // current tracking phase
275 Int_t fUseTGeo; // use TGeo to get material budget
276 Int_t fNtracks; // number of tracks to prolong
277 Float_t fxOverX0Pipe; // material budget
278 Float_t fxTimesRhoPipe; // material budget
279 Float_t fxOverX0Shield[2]; // material budget
280 Float_t fxTimesRhoShield[2]; // material budget
281 Float_t fxOverX0Layer[6]; // material budget
282 Float_t fxTimesRhoLayer[6]; // material budget
283 Float_t *fxOverX0PipeTrks; //! material budget
284 Float_t *fxTimesRhoPipeTrks; //! material budget
285 Float_t *fxOverX0ShieldTrks; //! material budget
286 Float_t *fxTimesRhoShieldTrks; //! material budget
287 Float_t *fxOverX0LayerTrks; //! material budget
288 Float_t *fxTimesRhoLayerTrks; //! material budget
289 TTreeSRedirector *fDebugStreamer; //!debug streamer
23197852 290 AliITSChannelStatus *fITSChannelStatus;//! bitmaps with channel status for SPD and SDD
291 AliITSDetTypeRec *fDetTypeRec; //! ITS det type rec, from AliITSReconstructor
ae00569a 292 AliITSPlaneEff *fPlaneEff; //! Pointer to the ITS plane efficicency
bf6adc12 293private:
8221b41b 294 AliITStrackerMI(const AliITStrackerMI &tracker);
295 AliITStrackerMI & operator=(const AliITStrackerMI &tracker);
23197852 296 ClassDef(AliITStrackerMI,5) //ITS tracker MI
e43c066c 297};
298
299
300
301
302/////////////////////////////////////////////////////////
303/////////////////////////////////////////////////////////
304/////////////////////////////////////////////////////////
305
306
307
308
309
310inline void AliITStrackerMI::SetupFirstPass(Int_t *flags, Double_t *cuts) {
311 // This function sets up flags and cuts for the first tracking pass
312 //
313 // flags[0] - vertex constaint flag
314 // negative means "skip the pass"
315 // 0 means "no constraint"
316 // positive means "normal constraint"
317
318 fConstraint[0]=flags[0];
319 if (cuts==0) return;
320}
321
322inline void AliITStrackerMI::SetupSecondPass(Int_t *flags, Double_t *cuts) {
323 // This function sets up flags and cuts for the second tracking pass
324 //
325 // flags[0] - vertex constaint flag
326 // negative means "skip the pass"
327 // 0 means "no constraint"
328 // positive means "normal constraint"
329
330 fConstraint[1]=flags[0];
331 if (cuts==0) return;
332}
333
334inline void AliITStrackerMI::CookLabel(AliKalmanTrack *t,Float_t wrong) const {
335 //--------------------------------------------------------------------
336 //This function "cooks" a track label. If label<0, this track is fake.
337 //--------------------------------------------------------------------
338 Int_t tpcLabel=t->GetLabel();
339 if (tpcLabel<0) return;
340 AliTracker::CookLabel(t,wrong);
341 if (tpcLabel!=TMath::Abs(t->GetLabel())){
342 t->SetFakeRatio(1.);
343 }
344 if (tpcLabel !=t->GetLabel()) {
345 t->SetLabel(-tpcLabel);
346 }
347}
348
15dd636f 349inline Double_t AliITStrackerMI::NormalizedChi2(AliITStrackMI * track, Int_t layer)
e43c066c 350{
351 //--------------------------------------------------------------------
352 //get normalize chi2
353 //--------------------------------------------------------------------
b9671574 354 track->SetNormChi2(layer,2.*track->GetNSkipped()+0.25*track->GetNDeadZone()+track->GetdEdxMismatch()+track->GetChi2()/
e43c066c 355 //track->fNormChi2[layer] = 2.*track->fNSkipped+0.25*track->fNDeadZone+track->fdEdxMismatch+track->fChi22/
b9671574 356 TMath::Max(double(track->GetNumberOfClusters()-track->GetNSkipped()),
357 1./(1.+track->GetNSkipped())));
358 return track->GetNormChi2(layer);
e43c066c 359}
00a7cc50 360inline void AliITStrackerMI::AliITSdetector::GetGlobalXYZ(const AliITSRecPoint *cl, Double_t xyz[3]) const
e43c066c 361{
362 //
363 // get cluster coordinates in global cooordinate
364 //
365 xyz[2] = cl->GetZ();
366 xyz[0] = fR*fCosPhi - cl->GetY()*fSinPhi;
367 xyz[1] = fR*fSinPhi + cl->GetY()*fCosPhi;
368}
369#endif